mirror of
https://github.com/nexus-stc/hyperboria
synced 2024-12-21 09:07:46 +01:00
143 lines
4.5 KiB
Python
143 lines
4.5 KiB
Python
from __future__ import annotations
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import asyncio
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import logging
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from typing import (
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List,
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Union,
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)
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import orjson as json
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from aiokafka import AIOKafkaConsumer
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from aiokafka.errors import (
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CommitFailedError,
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ConsumerStoppedError,
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)
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from aiokit import AioRootThing
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from google.protobuf.json_format import ParseDict
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from nexus.actions.exceptions import (
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ConflictError,
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InterruptProcessing,
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)
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from nexus.pipe.processors.base import Processor
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class BaseConsumer(AioRootThing):
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def __init__(self, processors: List[Processor],
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topic_names: Union[str, List[str]], bootstrap_servers: str, group_id: str):
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super().__init__()
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self.processors = processors
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if isinstance(topic_names, str):
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topic_names = [topic_names]
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self.topic_names = topic_names
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self.bootstrap_servers = bootstrap_servers
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self.group_id = group_id
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self.consumer = None
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self.starts.extend(self.processors)
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def create_consumer(self):
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return AIOKafkaConsumer(
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*self.topic_names,
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auto_offset_reset='earliest',
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loop=asyncio.get_event_loop(),
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bootstrap_servers=self.bootstrap_servers,
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group_id=self.group_id,
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enable_auto_commit=False,
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)
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def preprocess(self, msg):
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return msg
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async def start(self):
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logging.getLogger('statbox').info({
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'action': 'started',
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'group_id': self.group_id,
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'topic_names': self.topic_names,
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})
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self.consumer = self.create_consumer()
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await self.consumer.start()
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try:
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async for msg in self.consumer:
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preprocessed_msg = self.preprocess(msg)
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if preprocessed_msg:
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for processor in self.processors:
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if not processor.filter(preprocessed_msg):
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continue
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try:
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await processor.process(preprocessed_msg)
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except (ConflictError, InterruptProcessing) as e:
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logging.getLogger('statbox').info(e)
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except Exception as e:
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logging.getLogger('error').error(e)
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raise
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try:
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await self.consumer.commit()
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except CommitFailedError as e:
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logging.getLogger('error').error(e)
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except ConsumerStoppedError:
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pass
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async def stop(self):
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if not self.consumer:
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return
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await self.consumer.stop()
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class BasePbConsumer(BaseConsumer):
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pb_class = None
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def preprocess(self, msg) -> pb_class:
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pb = self.pb_class()
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pb.ParseFromString(msg.value)
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return pb
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class BaseJsonConsumer(BaseConsumer):
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pb_class = None
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def preprocess(self, msg) -> pb_class:
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pb = self.pb_class()
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message = json.loads(msg.value)
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ParseDict(message, pb, ignore_unknown_fields=True)
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return pb
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class BaseBulkConsumer(BaseConsumer):
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bulk_size = 20
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timeout = 1
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async def start(self):
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logging.getLogger('statbox').info({
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'action': 'started',
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'group_id': self.group_id,
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'topic_names': self.topic_names,
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})
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self.consumer = self.create_consumer()
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await self.consumer.start()
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while self.started:
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try:
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result = await self.consumer.getmany(timeout_ms=self.timeout * 1000, max_records=self.bulk_size)
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except ConsumerStoppedError:
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break
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collector = []
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for tp, messages in result.items():
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if messages:
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for message in messages:
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preprocessed_msg = self.preprocess(message)
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if preprocessed_msg:
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collector.append(preprocessed_msg)
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for processor in self.processors:
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filtered = filter(processor.filter, collector)
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try:
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await processor.process_bulk(filtered)
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except InterruptProcessing as e:
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logging.getLogger('statbox').info(e)
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except Exception as e:
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logging.getLogger('error').error(e)
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raise
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try:
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await self.consumer.commit()
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except CommitFailedError as e:
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logging.getLogger('error').error(e)
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continue
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